A month ago, two New York prisoners escaped from a maximum security prisons causing a 22-day long manhunt that made national headlines. The prisoners, Richard Matt and David Sweat, reportedly used heavy power tools to cut through prison walls and pipes and eventually making their way to the outside by climbing through a manhole. The two men were eventually found, with police shooting and killing Matt and leaving Sweat injured. Clinton Correctional Facility is one of the largest and most highly guarded prisons in New York, leading to a number of questions on how the escape was possible.

The escape has launched a major investigation into prison workers who allegedly helped the inmates. Some prison officials have been charged with helping the prisoners smuggle in and hide the power tools that made the escape possible. The overall security of the prison is being scrutinized as well. Officials investigating the prison break are wondering how prison workers did not notice the preparations for the escape by the inmates, apparently having been weeks long. The inmates also had holes in their cell walls for days prior to the escape, raising questions as prison workers are required to inspect the inmates’ cells on a daily basis.

The escape is one of the most organized and planned escapes in recent history has caused $300,000 in damages to the prison. The investigation into how the inmates were able to break free from the prison is ongoing.